CN219393144U

CN219393144U - Winding structure of power inductor

Info

Publication number: CN219393144U
Application number: CN202320761104.9U
Authority: CN
Inventors: 徐亮; 喻晶; 缪冬青; 李莉华
Original assignee: Zhongtian Broadband Technology Co Ltd
Current assignee: Zhongtian Broadband Technology Co Ltd
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-07-21
Anticipated expiration: 2033-04-07

Abstract

The utility model discloses a power inductance winding structure, which relates to the technical field of electric induction equipment, and comprises the following components: a winding core body; the first winding unit is arranged on the winding core body in a surrounding manner; the second winding unit is connected with the first winding unit and is arranged on the first winding unit in a surrounding mode; and the third winding unit is connected with the second winding unit and is circumferentially arranged on the second winding unit. The power inductor winding structure provided by the utility model can effectively reduce the leakage inductance of the inductor, reduce resonance and has a simple winding process.

Description

Winding structure of power inductor

Technical Field

The utility model relates to the technical field of electric induction equipment, in particular to a power inductance winding structure.

Background

The inductance, due to its own process characteristics, can create leakage inductance during the winding process. The switching tube has parasitic capacitance due to its own process characteristics. In the rectifier module power circuit, the inductor and the switching tube are always used simultaneously, and leakage inductance of the inductor and parasitic capacitance of the switching tube can resonate. The resonance amplitude is proportional to the leakage inductance of the inductor and the parasitic capacitance of the switching tube. The leakage inductance of the inductance wound by the traditional power inductance winding mode is larger, so that when the voltage directions at two ends of the inductance change, the oscillation amplitude generated by the current flowing through the inductance is larger, and in order to reduce the oscillation amplitude, the leakage inductance of the inductance needs to be reduced as much as possible.

Disclosure of Invention

The utility model aims to provide a power inductance winding structure which can effectively reduce leakage inductance of an inductance, reduce resonance and is simple in winding process.

The above object of the present utility model can be achieved by the following technical solutions:

the utility model provides a power inductance winding structure, which comprises:

a winding core body;

the first winding unit is arranged on the winding core body in a surrounding manner;

the second winding unit is connected with the first winding unit and is arranged on the first winding unit in a surrounding mode;

and the third winding unit is connected with the second winding unit and is circumferentially arranged on the second winding unit.

In a preferred embodiment, the winding core body is in a ring shape, the winding core body is provided with a first position and a second position, and the first position and the second position divide the ring-shaped winding core body into a winding section and a spacing section.

In a preferred embodiment, the first winding unit comprises a first conductor extending from the first position to the second position in a spiral along the winding section of the winding core.

In a preferred embodiment, the winding core has a third location thereon, the third location being located on the winding segment and at a midpoint between the first location and the second location.

In a preferred embodiment, the second winding unit includes a second conductor connected to the end of the first conductor at the second position, the second conductor extending from the second position to the third position in a spiral shape along the winding section of the winding core.

In a preferred embodiment, the first conductor extends in a spiral shape and is formed with a plurality of first winding rings, and the second conductor extends in a spiral shape and is formed with a plurality of second winding rings, and the second winding rings are embedded between two adjacent first winding rings.

In a preferred embodiment, the third winding unit includes a third conductor connected to an end of the second conductor at the third position, the third conductor extending from the third position to the second position in a spiral shape along the winding section of the winding core.

In a preferred embodiment, the third conductor extends in a spiral shape and is formed with a plurality of third winding rings, and the third winding rings are embedded between two adjacent second winding rings.

In a preferred embodiment, the first position and the second position are radially separated by a predetermined distance, the predetermined distance being between 1mm and 2 mm.

In a preferred embodiment, the power inductance winding structure further includes a supporting frame, and the winding core body is fixedly disposed on the supporting frame through the spacer.

The utility model has the characteristics and advantages that:

the utility model provides a power inductance winding structure, which is provided with a first winding unit, a second winding unit and a third winding unit, wherein the first winding unit is directly arranged on a winding core body in a surrounding mode, the second winding unit is arranged on the first winding unit in a surrounding mode, and the third winding unit is arranged on the second winding unit in a surrounding mode. Therefore, the winding structure utilizes the magnetic field counteracting principle to mutually counteract the magnetic fields among the first winding unit, the second winding unit and the third winding unit, thereby effectively reducing the leakage inductance of the inductor, reducing the resonance influence and simplifying the whole winding process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a power inductor winding structure according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, may be in communication with each other in two elements, may be directly connected, or may be indirectly connected through an intermediary, and the specific meaning of the terms may be understood by those of ordinary skill in the art in view of the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, an embodiment of the present utility model provides a power inductor winding structure, which includes: a winding core body 1; a first winding unit 21 circumferentially provided on the winding core body 1; a second winding unit 22 connected to the first winding unit 21, the second winding unit 22 being circumferentially disposed on the first winding unit 21; and a third winding unit 23 connected to the second winding unit 22, the third winding unit 23 being circumferentially disposed on the second winding unit 22.

In order to further describe the specific structure of the power inductor winding structure in the embodiment of the present utility model, the specific structure, connection relationship, etc. are further described below, where:

in a preferred embodiment, the winding core 1 is arranged in a ring shape, the winding core 1 is provided with a first position 11 and a second position 12, and the first position 11 and the second position 12 divide the ring-shaped winding core 1 into a winding section 1a and a spacing section 1b.

In a preferred embodiment, the first winding unit 21 comprises a first conductor extending from the first location 11 to the second location 12 in a spiral along the winding section 1a of the winding core 1.

In a preferred embodiment, the winding core 1 has a third position 13, and the third position 13 is located on the winding segment 1a and located at a midpoint between the first position 11 and the second position 12.

In a preferred embodiment, the second winding unit 22 comprises a second conductor connected to the end of the first conductor at a second location 12, the second conductor extending helically along the winding section 1a of the winding core 1 from the second location 12 to a third location 13.

In a preferred embodiment, the first conductor extends in a spiral shape and is formed with a plurality of first winding rings 211, and the second conductor extends in a spiral shape and is formed with a plurality of second winding rings 221, and the second winding rings 221 are embedded between two adjacent first winding rings 211.

In a preferred embodiment, the third winding unit 23 comprises a third conductor connected to the end of the second conductor at a third location 13, the third conductor extending helically along the winding section 1a of the winding core 1 from the third location 13 to the second location 12.

In a preferred embodiment, the third conductor extends in a spiral shape and is formed with a plurality of third winding rings, and the third winding rings are embedded between two adjacent second winding rings 221.

In a preferred embodiment, the first position 11 and the second position 12 are radially spaced apart by a predetermined distance D, the predetermined distance D being between 1mm and 2 mm.

In a preferred embodiment, the power inductor winding structure further includes a supporting frame 3, and the winding core 1 is fixedly disposed on the supporting frame 3 through the spacing section 1b.

Based on the above structural description, the power inductor winding structure of the embodiment of the utility model has the following beneficial effects:

the power inductance winding structure provided by the embodiment of the utility model is provided with a first winding unit 21, a second winding unit 22 and a third winding unit 23, wherein the first winding unit 21 is directly and circumferentially arranged on the winding core body 1, the second winding unit 22 is circumferentially arranged on the first winding unit 21, and the third winding unit 23 is circumferentially arranged on the second winding unit 22. Therefore, the winding structure utilizes the magnetic field cancellation principle to cancel the magnetic fields among the first winding unit 21, the second winding unit 22 and the third winding unit 23, thereby effectively reducing the leakage inductance of the inductor, reducing the resonance influence and simplifying the whole winding process.

The foregoing is merely exemplary embodiments of the present utility model and those skilled in the art may make various modifications and alterations to the embodiments of the present utility model based on the disclosure herein without departing from the spirit and scope of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A power inductor winding structure, comprising:

a winding core body;

2. The power inductor winding structure of claim 1, wherein said winding core is disposed in a ring shape, said winding core having a first position and a second position thereon, said first position and said second position separating said winding core in a ring shape to form a winding segment and a spacing segment.

3. The power inductor winding structure of claim 2 wherein said first winding unit includes a first conductor extending helically along said winding section of said winding core from said first position to said second position.

4. The power inductor winding structure of claim 3 wherein said winding core has a third location thereon, said third location being located on said winding segment and at a midpoint between said first location and said second location.

5. The power inductor winding structure of claim 4 wherein said second winding unit includes a second conductor connected to an end of said first conductor at said second location, said second conductor extending helically along said winding section of said winding core from said second location to said third location.

6. The power inductor winding structure of claim 5 wherein said first conductor extends in a spiral configuration and defines a plurality of first winding loops and said second conductor extends in a spiral configuration and defines a plurality of second winding loops, said second winding loops being interposed between adjacent ones of said first winding loops.

7. The power inductor winding structure of claim 6 wherein said third winding unit includes a third conductor connected to an end of said second conductor at said third location, said third conductor extending helically along said winding section of said winding core from said third location to said second location.

8. The power inductor winding structure as set forth in claim 7, wherein said third conductor extends in a spiral shape and is formed with a plurality of third winding loops, said third winding loops being interposed between adjacent two of said second winding loops.

9. The power inductor winding structure of claim 2, wherein the first location and the second location are radially spaced apart by a predetermined distance, the predetermined distance being between 1mm and 2 mm.

10. The power inductor winding structure of claim 2 further comprising a support frame, said winding core being fixedly disposed on said support frame by said spacer.